CAT3211 Datasheet, PDF (1/14 Pages) ON Semiconductor – Programmable Haptic Driver for Rotary DC Motors

CAT3211
I²C Programmable Haptic
Driver for Rotary (ERM) DC
Motors
Description
The CAT3211 is an H−Bridge motor driver IC that includes an I²C
programmable haptic generator state machine, internal oscillator and
adjustable LDO voltage regulator, all in one compact solution.
Two operating modes are supported: haptic mode (triggered via
H_TRIG pin or register) and vibrator mode (VIB_EN pin or register).
H−TRIG triggers a haptic sequence where Forward, Coast, Reverse
and Recovery time durations are controlled. All four timer durations
are configured via I²C interface registers.
The LDO output voltage supplying the H−Bridge can be
programmed from 2.0 V to 5.0 V or shorted to VIN (using LDOH
register). This allows the motor to be safely overdriven for short
durations, greatly increasing the user experience.
Driving VIB_EN high sets the H−Bridge to forward direction and
LDO voltage to a predefined vibrator setting (using LDOV register).
The motor can be continuously and safely driven at low voltages in
vibrator mode.
The device is fully protected against POS, NEG and REG short and
over current conditions. Thermal shutdown protection prevents
damage to the device and system during over temperature junction
conditions.
UQFN12 1.7 x 2 mm package is ideal for space constrained
applications.
Features
• Haptic Generator Mode with Programmable Timers
• Internal 1 ms Oscillator ±20%
• 600 mA Output Drive Current
• High Speed 400 kHz I²C Interface
• Internal LDO with Mode Adjustable Output Voltage
• Supply Voltage Range from 2.7 V to 5.5 V
• Internal H−Bridge Driver (0.8 W typ.)
• 1 Amp Diode Clamping Capability (H−Bridge & LDO)
• Zero Current Shutdown Mode
• Thermal Shutdown and Over−current Protection
• Small 1.7 mm x 2 mm, 12−lead UQFN Package
• These Devices are Pb−Free and are RoHS Compliant
Typical Applications
• Eccentric Rotating Mass (ERM) Motor Control
• Haptic Vibrators in Mobile Devices
http://onsemi.com
1
UQFN12
MU SUFFIX
CASE 523AE
MARKING DIAGRAM
KAM
G
KA = Specific Device Code
M = Date Code
G = Pb−Free Package
PIN CONNECTIONS
1 GND
RST
VIB_EN
SDA
H_TRIG
SCL
OSC
VIN
REG
NEG
POS
PGND
(Top View)
ORDERING INFORMATION
Device
CAT3211MUTAG
Package
UQFN12
(Pb−Free)
Shipping^†
3000/
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2013
1
April, 2013 − Rev. 0
Publication Order Number:
CAT3211/D